PUSCH Transmission Parameter Selection for Multi-TRP NR Uplink

The patent applies preliminary action by establishing predetermined rules for parameter determination before the actual transmission occurs. When the PUCCH resource with the lowest resource identifier is configured with multiple transmission parameters, the terminal device determines the PUSCH transmission parameter based on pre-defined criteria (such as using the first parameter in the list or parameters from a specifically indicated PUCCH resource). This preliminary establishment of selection rules resolves the ambiguity problem while maintaining the multi-parameter configuration for reliability.

The patent applies the extraction principle by separating the parameter determination process into distinct components. When multiple transmission parameters are configured for PUCCH diversity, the patent extracts and identifies a specific subset of parameters to be used for PUSCH transmission. For example, it may extract only the first parameter from the list of multiple parameters, or extract parameters from a specifically indicated PUCCH resource, thereby reducing the configuration complexity while maintaining the benefits of multi-parameter diversity transmission.

The patent applies the universality principle by creating a parameter determination mechanism that works universally across both single-TRP and multi-TRP scenarios. The same rule-based approach (selecting parameters based on PUCCH resource identification or predefined criteria) can be applied regardless of whether the system uses one TRP or multiple TRPs. This allows the system to maintain single-device complexity while achieving multi-TRP transmission reliability when needed, as the mechanism adapts to the configured scenario without requiring separate processing logic.